diff --git a/docs/requirements.txt b/docs/requirements.txt
index ffc6fc227..b9245e074 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,2 +1,4 @@
+sphinx==6.2.1
+sphinx-rtd-theme==1.2.2
 sphinxemoji
 breathe